In materials science, hardness (antonym: softness) is a measure of the resistance to localized plastic deformation, such as an indentation (over an area)...
21 KB (2,476 words) - 03:05, 16 April 2024
Mohs scale (redirect from Mohs hardness scale)
The Mohs scale of mineral hardness (/moʊz/) is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability...
16 KB (1,109 words) - 02:28, 23 August 2024
Hard water (redirect from Water hardness)
benefits. It can pose critical problems in industrial settings, where water hardness is monitored to avoid costly breakdowns in boilers, cooling towers, and...
43 KB (4,516 words) - 12:18, 4 August 2024
Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019) Hardness Conversion Table – Brinell...
4 KB (127 words) - 21:15, 18 December 2023
In computational complexity theory, a computational problem H is called NP-hard if, for every problem L which can be solved in non-deterministic polynomial-time...
8 KB (1,082 words) - 09:57, 24 July 2024
Rockwell scale (redirect from Rockwell hardness test)
The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measures the depth of penetration of an indenter...
17 KB (1,840 words) - 09:44, 29 October 2023
The Vickers hardness test was developed in 1921 by Robert L. Smith and George E. Sandland at Vickers Ltd as an alternative to the Brinell method to measure...
12 KB (1,656 words) - 17:00, 18 November 2023
Hardness scales may refer to: Scratch hardness The Mohs scale of mineral hardness The Vickers hardness test The Brinell scale The Janka hardness test The...
667 bytes (101 words) - 22:38, 11 February 2022
Brinell scale (redirect from Brinell Hardness Scale)
hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in...
7 KB (749 words) - 22:32, 20 March 2024
Carbonate hardness, is a measure of the water hardness caused by the presence of carbonate (CO2− 3) and bicarbonate (HCO− 3) anions. Carbonate hardness is usually...
3 KB (445 words) - 16:26, 17 March 2024